FrameSizeScalabilityInterface Class Reference

Frame Rate Scalability Interface. More...

#include <framesizescalabilityinterface.h>

Inheritance diagram for FrameSizeScalabilityInterface:

List of all members.

Public Member Functions
virtual const char *	getFrameSizeScalabilityClass () const =0
virtual bool	isFrameSizeScalable () const =0
virtual bool	isVariableBitrate () const =0
virtual cardinal	getMinPayloadFrameSizeForDelay (const double frameRate, const cardinal bufferDelay) const =0
virtual cardinal	getMaxPayloadFrameSizeForDelay (const double frameRate, const cardinal bufferDelay) const =0
virtual cardinal	getMaxFrameCountForDelay (const double frameRate, const cardinal bufferDelay) const =0
virtual bool	isValidPayloadFrameSize (const double frameRate, const cardinal bufferDelay, const cardinal frameSize) const =0
virtual cardinal	getNearestValidPayloadFrameSize (const double frameRate, const cardinal bufferDelay, const cardinal frameSize) const =0
virtual cardinal	getNextPayloadFrameSizeForDelayAndSize (const double frameRate, const cardinal bufferDelay, const cardinal frameSize) const =0
virtual cardinal	getPrevPayloadFrameSizeForDelayAndSize (const double frameRate, const cardinal bufferDelay, const cardinal frameSize) const =0
virtual double	getPayloadFrameSizeScaleFactorForDelayAndSize (const double frameRate, const cardinal bufferDelay, const cardinal frameSize) const =0
virtual double	getPayloadFrameSizeUtilizationForDelayAndSize (const double frameRate, const cardinal bufferDelay, const cardinal frameSize) const =0
virtual double	getFrameSizeUtilizationWeight (const double frameRate) const =0
virtual cardinal	getMaxBufferDelay (const double frameRate) const =0
virtual cardinal	getNextBufferDelayForDelay (const double frameRate, const cardinal bufferDelay) const =0
virtual cardinal	getPrevBufferDelayForDelay (const double frameRate, const cardinal bufferDelay) const =0

---

Detailed Description

Frame Rate Scalability Interface.

This class is an interface for frame size scalability. Important node: All frames sizes in this class are payload frame sizes!

Author:

Thomas Dreibholz

Version:

1.0

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Member Function Documentation

virtual const char* FrameSizeScalabilityInterface::getFrameSizeScalabilityClass

(

)

const [pure virtual]

Get name of the frame size scalability class.

Returns:

Frame size scalability class name.

virtual double FrameSizeScalabilityInterface::getFrameSizeUtilizationWeight

(

const double

frameRate

)

const [pure virtual]

Get frame size utilization weight.

Parameters:

frameRate

Frame rate.

Returns:

Utilization weight.

virtual cardinal FrameSizeScalabilityInterface::getMaxBufferDelay

(

const double

frameRate

)

const [pure virtual]

Get maximum buffer delay. The *minimum* buffer delay is always 1.

Parameters:

frameRate

Frame rate.

Returns:

Maximum buffer delay.

virtual cardinal FrameSizeScalabilityInterface::getMaxFrameCountForDelay	(	const double	frameRate,
		const cardinal	bufferDelay
	)		const [pure virtual]

Get maximum number of frames for given buffer delay (in frame rate units).

Parameters:

frameRate	Frame rate.
bufferDelay	Buffer delay in frame rate units.

Returns:

Maximum number of frames.

virtual cardinal FrameSizeScalabilityInterface::getMaxPayloadFrameSizeForDelay	(	const double	frameRate,
		const cardinal	bufferDelay
	)		const [pure virtual]

Get maximum payload frame size for given buffer delay (in frame rate units).

Parameters:

frameRate	Frame rate.
bufferDelay	Buffer delay in frame rate units.

Returns:

Maximum payload frame size.

virtual cardinal FrameSizeScalabilityInterface::getMinPayloadFrameSizeForDelay	(	const double	frameRate,
		const cardinal	bufferDelay
	)		const [pure virtual]

Get minimum payload frame size for given buffer delay (in frame rate units).

Parameters:

frameRate	Frame rate.
bufferDelay	Buffer delay in frame rate units.

Returns:

Minimum payload frame size.

virtual cardinal FrameSizeScalabilityInterface::getNearestValidPayloadFrameSize	(	const double	frameRate,
		const cardinal	bufferDelay,
		const cardinal	frameSize
	)		const [pure virtual]

Get nearest lower valid payload frame rate for given frame rate for given buffer delay (in frame rate units).

Parameters:

frameRate	Frame rate.
bufferDelay	Buffer delay in frame rate units.
frameSize	Payload frame size.

Returns:

Valid payload frame size nearest to given size for given buffer delay.

virtual cardinal FrameSizeScalabilityInterface::getNextBufferDelayForDelay	(	const double	frameRate,
		const cardinal	bufferDelay
	)		const [pure virtual]

Get next higher valid buffer delay for given buffer delay.

Parameters:

frameRate	Frame rate.
bufferDelay	Buffer delay in frame rate units.

Returns:

Next higher valid buffer delay.

virtual cardinal FrameSizeScalabilityInterface::getNextPayloadFrameSizeForDelayAndSize	(	const double	frameRate,
		const cardinal	bufferDelay,
		const cardinal	frameSize
	)		const [pure virtual]

Get next higher valid payload frame size for given buffer delay (in frame rate units) and payload frame size.

Parameters:

frameRate	Frame rate.
bufferDelay	Buffer delay in frame rate units.
frameSize	Payload frame size.

Returns:

Next higher valid payload frame size for given buffer delay.

virtual double FrameSizeScalabilityInterface::getPayloadFrameSizeScaleFactorForDelayAndSize	(	const double	frameRate,
		const cardinal	bufferDelay,
		const cardinal	frameSize
	)		const [pure virtual]

Get scale factor for given buffer delay (in frame rate units) and payload frame size: (rate - MinFrameSize) / (MaxFrameRate - MinFrameSize)

Parameters:

frameRate	Frame rate.
frameSize	Frame size.

Returns:

Scale factor (out of [0,1])..

virtual double FrameSizeScalabilityInterface::getPayloadFrameSizeUtilizationForDelayAndSize	(	const double	frameRate,
		const cardinal	bufferDelay,
		const cardinal	frameSize
	)		const [pure virtual]

Get utilization for given buffer delay (in frame rate units) and payload frame size.

Parameters:

frameRate	Frame rate.
frameSize	Payload frame size.

Returns:

Utilization (out of [0,1])..

virtual cardinal FrameSizeScalabilityInterface::getPrevBufferDelayForDelay	(	const double	frameRate,
		const cardinal	bufferDelay
	)		const [pure virtual]

Get next lower valid buffer delay for given buffer delay.

Parameters:

frameRate	Frame rate.
bufferDelay	Buffer delay in frame rate units.

Returns:

Next lower valid buffer delay.

virtual cardinal FrameSizeScalabilityInterface::getPrevPayloadFrameSizeForDelayAndSize	(	const double	frameRate,
		const cardinal	bufferDelay,
		const cardinal	frameSize
	)		const [pure virtual]

Get next lower valid payload frame size for given buffer delay (in frame rate units) and frame size.

Parameters:

frameRate	Frame rate.
bufferDelay	Buffer delay in frame rate units.
frameSize	Payload frame size.

Returns:

Next lower valid payload frame size for given buffer delay.

virtual bool FrameSizeScalabilityInterface::isFrameSizeScalable

(

)

const [pure virtual]

Check, if frame size is scalable.

Returns:

true, if frame size is scalable; false otherwise.

virtual bool FrameSizeScalabilityInterface::isValidPayloadFrameSize	(	const double	frameRate,
		const cardinal	bufferDelay,
		const cardinal	frameSize
	)		const [pure virtual]

Check, if given payload frame size is a valid value for given buffer delay (in frame rate units).

Parameters:

frameRate	Frame rate.
bufferDelay	Buffer delay in frame rate units.
frameSize	Payload frame size to be checked.

Returns:

true, if given size is valid; false otherwise.

virtual bool FrameSizeScalabilityInterface::isVariableBitrate

(

)

const [pure virtual]

Check, if frame size is variable bitrate (frame sizes are different for each frame; the frame size given is the frame size necessary to be reserved for a given buffer delay).

Returns:

true, if frame size is variable bitrate; false otherwise.

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The documentation for this class was generated from the following file:

• framesizescalabilityinterface.h